anything with oil, grease or fuels saturation or stains ?

LESTOIL

You can use the types of cleaning solutions that everyone else mentioned. Either that, or dont stand directly over the fuel tank when you fuel. :P

I found that Simple Green works to get stinky petroleum products off.

I always have a can of Yamaha contact cleaner on the truck. When I pulled doubles and triples, there was always the chance of getting goobered in fifth wheel grease. A good spray of that (I have no idea what;s in the Yamaha brand to be best BTW) and the grease simply disappears! I would not suggest doing this while smoking either...

Rub the stain with some of that GOOP hand cleaner and then also throw about a baseball sized lump in the washing maching with it. It will come out.

Diesel has got to be one the hardest things there is to get the odor out of. One drop and it's there forever.

My vote is to burn them buy new and take off next year taxes.

Try using 1 cup of purple stuff degreaser in the wash or the generic equivalent.
Why throw them away, wearing diesel soaked clothes means you will never have problems with crabs or body lice lol.

I washed my jacket once on advice with Mr Clean...I put a bit too much in and it took a little while to get THAT smell out, but it did get the Diesel smell out. I'd try it again with just a couple cap fulls worth. Oh I soaked it too for a while before I let the machine do its thing.

Here's a sure proof way to get the diesel smell out of ANYTHING.....

Find a farm any kind could be cows, pigs, chickens whatever.
Ask the kind farmer if you can roll in the manure pile for a few minutes.
Find a real sloppy section and have at it.
I personally garunteee you will never smell the diesel again.
Ask me how I know.....

Be good, Jim